Universal joint.



J. D. FETZER. UNIVERSAL JOINT. APPLICATION rlLnn r1113. 21, 1914.

1,128,432. Patented Feb. 16, 1915;

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Ilium 1 y I I I I "n I y HIE JAMES D. FETZER, or COLUMBUS. OHIO.

UNIVERSAL JOINT.

' Specification of Letters Patent.

Application filed February 21, 1914. Serial No. 820,213.

To all euhom it may concern Be it known that I, the undersigned, JAMES D. FETZER, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Universal Joints; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains tomake and use the same.

This invention relates to universal joints and more particularly to that class of joints having bearing blocks interposed between the connecting parts, and has for one of its objects the provision of a joint wherein friction is reduced to a minimum.

A further object of this invention resides in the construction and arrangement of the connecting and wearing parts of the joint whereby the attainment of a greater latitude of angular direction of one of the shafts to the other is made possible, 'And a; further object of this invention resides in-the provision of a universal joint comprising few parts, simple in structure, efficient and dur= able in purpose, and which may be manufae.

tured and sold at a nominal cost. 1

These and other objects will more fully appear and the nature of the invention more clearly understood by the construction, coinbination and arrangement of the parts thereof as described in the following specification, defined in the appended claims and illustrated in the accompanying drawing, in-

which,

Figure 1 is a side view of the joint, partly in section, showing the interior of the same with the wearing and connecting parts as sembled therein and in operative position.

Fig. 2 is an end view of the joint taken on line 2--2 of Fig. 1 showing the diverging walls of the radial slot of one of the wearing parts and the position that the other of the as wearing parts hold therewithin. Fig. 3 is a perspective view, of the wearing block.

I Fig. 4 is a perspective view of the T-head for i I engaging the wearing block, and, Fig. 5 is a top view of the connecting parts, showing the wearing block partly in section and the T-liead seated therein.

Like reference characters denote corresponding parts throughout the several views of the drawing, in which, 1 denotes the cylindrical casing provided with a rectangular bore 2 therethrough having the inclined corof the casing l.

ners 3, the casing 1 being further provided adjacent, the periphery thereof with the apertures 4 through which pass the bolts 5 for retaining the shaft member 6 at one end v The shaft .member 6 is provided at its inner face with the boss 7 of the rectangular contour of the bore 2 of the casing 1 for fitting snugly therein. The shaft member 6 being further provided at its inner end with the enlarged circular aperture 8. The shaft member 6 is also provided with the central bore 10 into which is securely held the shaft 11 through the medium of the bolt or other suitable fastening means 11.

Slidably and rotatably mounted in the Patented Feb. 16, .1915.

edges. 14 at each end thereof. Extending diametrically through the block 12 is the bore 16 and extending radially outwardly toward the circumference of the block 12 is the slot-way 17, the opposite walls 18 of which diverge outwardly from the bore 16. In'the ends 13 are the usual oil holes 19. Within the bore 16 of the block 12 is seated the T head 20 of the shank 21-, the shank 21 being positioned between the diverging walls 18 of the slotway 17 but normally out of contact therewith. The T-head 20 of the shank- 21 is provided with the rounded ends 22. The shank 21 is further provided with the sleeve 23 into'which is mounted the shaft 24 secured therein by any suitable securing means as shown by the bolts 25.

For resiliently mounting the wearing block and its connections within the casing 1, the spring 26 is interposed, one'end of which is designed to bear against the block 12, the opposite end of the spring 26 being seated within the recess 8 of the shaft member 6 and bearing against the inner wall thereof. The fiat ends 13 of the block 12 travel upon the faces of two of the opposing walls of the rectangular bore 2 withinthe casing 1, the oblique edges 14 of the block 12 engaging the oblique corners 3 of the rectangular bore 20f the casing I. The

. block 12 is not only slidably mounted with in the casing 1 but the same is also mounted to rotate therein, this being due to the cylindrical exterior of the block 12, only a slight portion of the peripheral surface thereof engaging the adjacent walls of the rectangular bore 2. As a very limited surface of the block 12 engages the walls of the bore within the casing, friction is thereby reduced to practically a minimum.

Rotatably mounted within the bore 16 of the slot way 17 connecting the bore 16 of the block 12 with the exterior, this slot-way provides for the reception of the shank 21 which is adapted not to contact with either of the walls 18 at each side of the slot-way 17, the walls 18 being diverged for the purose of preventing contact with the shank '1 during the oscillatory movement of the same, thus providing for a greater latitude 1 or angular direction between the two shafts. Having thus fully described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. A universal joint comprising; a casing having a rectangular bore therethrough, a

cylindrical block slidably and rotatably mounted within said rectangular bore, said block having a diametrical bore therethrough, said block also'having a slotway extending radially from said diametrical bore, ashank, and a cylindrical head upon said shank, said head being rotatably mounted within the bore of said block, said shank projecting through said slotway of said block. 7

2. A universal joint comprising; a casing having a rectangular bore therethrough, a cylindrical block slidably and rotatably mounted within said rectangular bore, said block having a diametrical bore therethrough, said block also having a slotway extending radially from said diametrical bore and provided with diverging walls, a shank, and a cylindrical head upon said shank, said head being rotatably mounted within the diametrical bore of said block, said shank projecting through said radial slotway of said blockand out of contact with said diverging walls.

In testimony whereof I have signed my name to'this specification in the presence of two subscribing witnesses.

JAMES D. FETZER.

Witnesses: i

JOSEPHINE lFnTzEn, GRACE lFnrznR; 

